The bad news is, we’re in a disgusting heat wave. The good news it, we have some very cold water coming out of Hogback. Let’s start with this graph:
As you can see, the current release temps range from a morning low of around 47 degrees, and spike at around 56 in the afternoon. This is fantastic, and very fish friendly. But wait: that doesn’t mean all is well in Collinsville. With flows on the low side — just barely into three-figures of CFS — and air temperatures in the 90s, it doesn’t take long for that water to warm up.
So: use common sense. The closer you are to Hogback, the colder the water will be. The water will be warmest from noon into evening. Carry a thermometer, and use it. If you start getting readings approaching 68 degrees, don’t fish. Head north, or fish when the sun’s not beating down on the water.
I thank you. The trout thank you. Now, let’s all do a rain dance…